Come and see our amazing products. Comes with built in 40 mAh lithium battery, this bottle opener is made of ABS plastic and solar panel. 8 hours full charged under the sun. Consistently one and half hour flashing. It combines bottle opener with the flashing light. Great products for night events and beverage events. Available color: red, green, blue and black. Pls confirm with us about the packing info, stock status and exact production time before placing your orders.